Quote: Me , i'd go with the Ultradyne.............the earlier that 590 is installed the less top end #s that motor is gonna see , why install on a 100 CL? , surely this is telling you the cam is too big for the motor , installing that cam too early will be fine for the 'seat of the pants' feel , with the comp ratio you're running that 590 will be a dog , much better grinds out there for you're application.
What about the UD 290/.597 cam? 263@.050 and 108CL. That is what Tim at Bullet recommended for my stock stroke combo: 10.5,RPM heads, Dynamic 9.5, and 4.10. Runs great on the street and has a mean ex lope.
My best so far is 11.58@115 3800lbs Coronet. May be more in it if I knew what I was doing(not much track time....yet).
